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Service Description: NRCS and USGS are developing a nationwide digital watershed boundary dataset. The dataset is comprised of nested regions, called hydrologic units (HUs), which delineate progressively smaller watersheds. Each hydrologic unit has a code assigned to it, called a hydrologic unit code (HUC). A HUC is a series of two-digit groupings of numbers that describe a hydrologic unit's scale, plus where it fits in the larger hydrologic unit framework. Hydrologic units range in size from regions, which can cover several states, to subwatersheds, which generally cover areas of 25 to 50 square miles. HUCs start with a two-digit code for the region level, and then additional two-digit codes are appended as one moves in to smaller watersheds. The subwatershed level contains a 12-digit HUC.
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Description: The dataset is comprised of nested regions, called hydrologic units (HUs), which delineate progressively smaller watersheds.
Copyright Text: U. S. Department of Agriculture, Natural Resources Conservation Service
Spatial Reference:
3071
(3071)
Single Fused Map Cache: false
Initial Extent:
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Spatial Reference: 3071
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Full Extent:
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Spatial Reference: 3071
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Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Federal Hydrologic Units (HUCs)
Author: Dennis C. Wiese
Comments: NRCS and USGS are developing a nationwide digital watershed boundary dataset. The dataset is comprised of nested regions, called hydrologic units (HUs), which delineate progressively smaller watersheds. Each hydrologic unit has a code assigned to it, called a hydrologic unit code (HUC). A HUC is a series of two-digit groupings of numbers that describe a hydrologic unit's scale, plus where it fits in the larger hydrologic unit framework. Hydrologic units range in size from regions, which can cover several states, to subwatersheds, which generally cover areas of 25 to 50 square miles. HUCs start with a two-digit code for the region level, and then additional two-digit codes are appended as one moves in to smaller watersheds. The subwatershed level contains a 12-digit HUC.
Subject: The dataset is comprised of nested regions, called hydrologic units (HUs), which delineate progressively smaller watersheds.
Category:
Keywords: HUC8,HUC10,HUC12,HUC,Hydrologic Unit
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TextAntialiasingMode: Force
Supports Dynamic Layers: true
Resampling: false
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON
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Supports Datum Transformation: true
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